You should note that I have not said anything about kalalah and I have not appointed anyone to succeed me. Whoever of Arab captives are present when I die, are to be freed although they are among the wealth of Allah, may He be glorified and exalted. Sa'eed bin Zaid said: Why don't you suggest a man among the Muslims so that the people may follow your advice? Abu Bakr did that and the people followed his advice and trusted him. ‘Umar said: I have noticed too much greed and ambition, and I will leave this matter to be decided by these six people with whom the Messenger of Allah ﷺ was pleased when he died. Then ‘Umar said: If one of the two men were still alive, I would have referred to this matter to him and I would have trusted him: Salim the freed slave of Abu Hudhaifah and Abu 'Ubaidah bin al-Jarrah.  

اعْلَمُوا أَنِّي لَمْ أَقُلْ فِي الْكَلالَةِ شَيْئًا وَلَمْ أَسْتَخْلِفْ مِنْ بَعْدِي أَحَدًا وَأَنَّهُ مَنْ أَدْرَكَ وَفَاتِي مِنْ سَبْيِ الْعَرَبِ فَهُوَ حُرٌّ مِنْ مَالِ اللهِ ﷻ فَقَالَ سَعِيدُ بْنُ زَيْدٍ أَمَا إِنَّكَ لَوْ أَشَرْتَ بِرَجُلٍ مِنَ الْمُسْلِمِينَ لَائتَمَنَكَ النَّاسُ وَقَدْ فَعَلَ ذَلِكَ أَبُو بَكْرٍ وَائْتَمَنَهُ النَّاسُ فَقَالَ عُمَرُ قَدْ رَأَيْتُ مِنْ أَصْحَابِي حِرْصًا سَيِّئًا وَإِنِّي جَاعِلٌ هَذَا الْأَمْرَ إِلَى هَؤُلاءِ النَّفَرِ السِّتَّةِ الَّذِينَ مَاتَ رَسُولُ اللهِ ﷺ وَهُوَ عَنْهُمْ رَاضٍ ثُمَّ قَالَ عُمَرُ لَوْ أَدْرَكَنِي أَحَدُ رَجُلَيْنِ ثُمَّ جَعَلْتُ هَذَا الْأَمْرَ إِلَيْهِ لَوَثِقْتُ بِهِ سَالِمٌمَوْلَى أَبِي حُذَيْفَةَ وَأَبُو عُبَيْدَةَ بْنُ الْجَرَّاحِ